Laboratory explorations in general zoology / Karl A. Stiles and Robert D. Burns. Stiles, Karl A. 1897-1968. Burns, Robert D., joint author. Zoology Laboratory manuals. QL53 .S753 1972 591 STL New York : Macmillan, 1972. 1972. 1972 Text xiv, 369 p. in various pagings : eng